<template>
  <div class="login-container">
    <el-form
      ref="loginForm"
      :model="loginForm"
      :rules="loginRules"
      class="login-form"
      auto-complete="on"
      label-position="left"
    >
      <h3 class="title">机器学习课程在线教育平台后台管理</h3>
      <el-form-item prop="username">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input
          v-model="loginForm.username"
          name="username"
          type="text"
          auto-complete="on"
          placeholder="username"
        />
      </el-form-item>
      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password" />
        </span>
        <el-input
          :type="pwdType"
          v-model="loginForm.password"
          name="password"
          auto-complete="on"
          placeholder="password"
          @keyup.enter.native="handleLogin"
        />
        <span class="show-pwd" @click="showPwd">
          <svg-icon icon-class="eye" />
        </span>
      </el-form-item>
      <!-- <el-form-item>
        <el-radio-group
          v-model="loginForm.type"
          style="width: 100%; text-align: center"
        >
          <el-radio label="admin">管理员登录</el-radio>
          <el-radio label="teacher">讲师登录</el-radio>
        </el-radio-group>
      </el-form-item> -->
      <el-form-item>
        <el-button
          :loading="loading"
          type="primary"
          style="width: 100%"
          @click.native.prevent="handleLogin"
        >
          Sign in
        </el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
import store from "@/store";

export default {
  name: "Login",
  data() {
    const validatePass = (rule, value, callback) => {
      if (value.length < 5) {
        callback(new Error("密码不能小于5位"));
      } else {
        callback();
      }
    };
    return {
      loginForm: {
        username: "",
        password: "",
        type: "admin",
      },
      loginRules: {
        username: [
          { required: true, trigger: "blur", message: "请输入用户名" },
        ],
        password: [
          { required: true, trigger: "blur", validator: validatePass },
        ],
      },
      loading: false,
      pwdType: "password",
      redirect: undefined,
    };
  },
  watch: {
    $route: {
      handler: function (route) {
        this.redirect = route.query && route.query.redirect;
      },
      immediate: true,
    },
  },
  methods: {
    showPwd() {
      if (this.pwdType === "password") {
        this.pwdType = "";
      } else {
        this.pwdType = "password";
      }
    },
    async handleLogin() {
      try {
        await this.$refs.loginForm.validate();
        this.loading = true;

        // 1. 执行登录
        await this.$store.dispatch("user/login", this.loginForm);

        // 2. 获取用户信息（同步等待）
        const infoAction =
          this.loginForm.type === "admin"
            ? "user/GetInfo"
            : "user/GetTeacherInfo";
        await this.$store.dispatch(infoAction);

        // // 3. 状态验证
        // await this.$nextTick();
        // if (!this.$store.getters.roles || this.$store.getters.roles.length === 0){
        //   throw new Error('ROLES_NOT_LOADED');
        // }

        // // 4. 确保路由加载完成
        // await new Promise(resolve => setTimeout(resolve, 50));

        this.$router.push(this.redirect || "/dashboard");

        console.log("用户角色:", store.getters.role);
        console.log(
          "当前用户权限:",
          JSON.stringify(
            {
              role: this.$store.getters.role,
              buttons: this.$store.getters.buttons,
              routes: this.$store.getters.routes,
            },
            null,
            2
          )
        );
      } catch (error) {
        console.error("登录流程错误:", {
          error,
          storeState: this.$store.state.user,
        });
        this.$message.error(error.message || "登录失败");
      } finally {
        this.loading = false;
      }
    },
  },
};
</script>

<style rel="stylesheet/scss" lang="scss">
$bg: #739ed6;
$light_gray: #eee;
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;
    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      &:-webkit-autofill {
        -webkit-box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: #fff !important;
      }
    }
  }
  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style rel="stylesheet/scss" lang="scss" scoped>
$bg: #7fa9e1;
$dark_gray: #889aa4;
$light_gray: #eee;
.login-container {
  position: fixed;
  height: 100%;
  width: 100%;
  background-color: $bg;
  .login-form {
    position: absolute;
    left: 0;
    right: 0;
    width: 520px;
    max-width: 100%;
    padding: 35px 35px 15px 35px;
    margin: 120px auto;
  }
  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;
    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }
  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }
  .title {
    font-size: 26px;
    font-weight: 400;
    color: $light_gray;
    margin: 0px auto 40px auto;
    text-align: center;
    font-weight: bold;
  }
  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
</style>